What Changed For Western Digital Stock, And What Did Not?

Western Digital (WDC) stock fell 10.2% on Friday, October 2, 2026, while the S&P 500 gained 0.7%. News coverage that day tied the fall to Toshiba, a smaller rival in hard disks. Toshiba's planned expansion raises the risk of lower prices, a report said a day later. So what part do prices play in Western Digital's profit.